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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $535,980 | 46,037 | 53,630 |
| 2006 | $228,303 | 19,610 | 10,706 |
| 2007 | $1,056,562 | 96,297 | 167,848 |
| 2008 | $2,134,748 | 199,411 | 384,520 |
| 2009 | $1,178,174 | 110,276 | 174,938 |
| 2010 | $433,143 | 41,317 | 40,310 |
| 2011 | $1,892,448 | 205,405 | 180,624 |
Note: Quantity represents Number of pairs
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